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. 2023 Sep 13;47(9):787–796. doi: 10.1093/jat/bkad071

Table IV.

Calibration Model, LOQ and LOD

Analyte Calibration range (nM) Model Weighting LOQ (nM) LOD (nM) Correlation (R2) Origin
Metodesnitazene 0.5–50 Quadratic 1/x2 0.5 0.1 0.998 Excluded
Flunitazene 0.5–50 Quadratic 1/x2 0.5 0.1 0.999 Excluded
Metonitazene 0.5–50 Quadratic 1/x2 0.5 0.05 0.998 Excluded
Etodesnitazene 0.5–50 Quadratic 1/x 0.5 0.01 0.997 Excluded
Etonitazepyne 0.5–50 Quadratic 1/x2 0.5 0.01 0.999 Excluded
Clonitazene 0.1–50 Quadratic 1/x2 0.1 0.02 0.999 Excluded
Etonitazene 0.5–50 Quadratic 1/x2 0.5 0.02 0.999 Excluded
Isotonitazene 0.1–50 Quadratic 1/x2 0.1 0.02 0.998 Excluded
Protonitazene 0.5–50 Quadratic 1/x 0.5 0.1 0.999 Excluded